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129946-88-9

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  • High quality CS-(Trifluoromethyl)dibenzothiophenium trifluoromethanesulfonate supplier in China

    Cas No: 129946-88-9

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129946-88-9 Usage

Chemical Properties

S-(Trifluoromethyl)dibenzothiophenium trifluoromethanesulfonate is white to pale brown crystalline powder

Uses

Different sources of media describe the Uses of 129946-88-9 differently. You can refer to the following data:
1. S-(Trifluoromethyl)dibenzothiophenium trifluoromethanesulfonate. Electrophilic trifluoromethylation in ionic liquids. Used in the stereoselective preparation of trifluoromethylalkynes by trifluoromethylation of terminal alkynes using Umemoto′s reagent and a copper catalyst.
2. 5-(Trifluoromethyl)dibenzothiophenium 1,1,1-Trifluoromethanesulfonate is used in the synthesis of substituted isoxazolines. Also used in the synthesis of β-ketophosphonate derivatives as building blocks in automated syntheses.

Check Digit Verification of cas no

The CAS Registry Mumber 129946-88-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,9,4 and 6 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 129946-88:
(8*1)+(7*2)+(6*9)+(5*9)+(4*4)+(3*6)+(2*8)+(1*8)=179
179 % 10 = 9
So 129946-88-9 is a valid CAS Registry Number.
InChI:InChI=1/C13H7F3S.CHF3O3S/c14-13(15,16)9-5-3-7-11-12(9)8-4-1-2-6-10(8)17-11;2-1(3,4)8(5,6)7/h1-7H;(H,5,6,7)

129946-88-9 Well-known Company Product Price

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  • Aldrich

  • (483877)  5-(Trifluoromethyl)dibenzothiopheniumtrifluoromethanesulfonate  97%

  • 129946-88-9

  • 483877-1G

  • 1,210.95CNY

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129946-88-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name S-(Trifluoromethyl)dibenzothiophenium trifluoromethanesulfonate

1.2 Other means of identification

Product number -
Other names 5-(Trifluoromethyl)-5H-dibenzo[b,d]thiophen-5-ium trifluoromethanesulfonate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:129946-88-9 SDS

129946-88-9Relevant articles and documents

Powerful, Thermally Stable, One-Pot-Preparable, and Recyclable Electrophilic Trifluoromethylating Agents: 2,8-Difluoro- and 2,3,7,8-Tetrafluoro-S-(trifluoromethyl)dibenzothiophenium Salts

Umemoto, Teruo,Zhang, Bin,Zhu, Tianhao,Zhou, Xiaocong,Zhang, Peng,Hu, Song,Li, Yuanqiang

, p. 7708 - 7719 (2017)

Although many electrophilic trifluoromethylating agents have been reported to date, practically useful reagents have yet to be developed. S-(Trifluoromethyl)dibenzothiophenium salts, known as Umemoto's reagents, have two significant drawbacks that have ha

Effective methods for preparing S-(trifluoromethyl)dibenzothiophenium salts

Umemoto, Teruo,Ishihara, Sumi

, p. 75 - 81 (2007/10/03)

New effective methods were developed for the preparation of useful electrophilic trifluoromethylating agents, S-(trifluoromethyl)dibenzothiophenium tetrafluoroborate (3) and triflate (4) and S-(trifluoromethyl)dibenzothiophenium-3-sulfonate (6). Thus, salts 3 and 4 were produced by the intramolecular cyclization of sulfoxide 1 with fuming sulfuric acid, followed by the counteranion replacement reaction of the intermediate (2) with sodium tetrafluoroborate and triflate, and salt 6 was directly produced from 1 by treatment with excess fuming sulfuric acid. Useful preparative methods for 1 were also described.

Power-variable electrophilic trifluoromethylating agents. S-, Se-, and Te-(trifluoromethyl)dibenzothio-, -seleno-, and -tellurophenium salt system

Umemoto, Teruo,Ishihara, Sumi

, p. 2156 - 2164 (2007/10/02)

S-, Se-, and Te-trifluoromethylated dibenzoheterocyclic onium salts, their derivatives, and related salts were synthesized by the direct fluorination of a mixture of 2-[(trifluoromethyl)thio- or seleno]biphenyls and triflic acid (TfOH) or HBF4 etherate, by treatment of the corresponding sulfoxides and selenoxides with Tf2O, by a new type of tellurium activation of 2-[(trifluoromethyl)telluro]biphenyl with Tf2O and (CH3)2SO, or by derivation from the onium salts obtained. Examination of reactivity indicated the trifluoromethyl heterocyclic salts to be greatly reactive compared to nonheterocyclic salts and indicated that this heterocyclic salt system serves as a source of widely applicable trifluoromethylating agents. Their capacity to function as such varied remarkably and increased in the order of Te 2 2. For mixed heterocyclic salts, the orders differed, apparently being determined by the electron deficiency of the CF3 group due to the electron-withdrawing or -donating effects of chalcogens and ring substituents, rather than the inherent nature of the chalcogens. Because of this variation, it was possible to trifluoromethylate a wide range of nucleophilic substrates differing in reactivity: carbanions, activated aromatics, heteroaromatics, enol silyl ethers, enamines, phosphines, thiolate anions, and iodide anions. The reaction mechanism is discussed, and a bimolecular ionic substitution mechanism competing with a free CF3 radical chain mechanism is proposed. Thus, a new field, electrophilic trifluoromethylation, has been established by the present study.

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